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6.2 KiB
6.2 KiB
id, title, challengeType, dashedName
| id | title | challengeType | dashedName |
|---|---|---|---|
| 646d45b739da5ecbf830c108 | Step 87 | 0 | step-87 |
--description--
Your apply function is returning the spreadsheet function, but not actually applying it. Update apply to call the function. Pass in the result of calling toNumberList with args as an argument.
--hints--
Your apply function should call the spreadsheetFunctions[fn.toLowerCase()] function.
assert.match(code, /const\s+applyFunction\s*=\s*(?:\(\s*str\s*\)|str)\s*=>\s*\{\s*const\s+noHigh\s*=\s*highPrecedence\(\s*str\s*\)\s*;?\s*const\s+infix\s*=\s*\/\(\[(?:\\d\.|\.\\d)\]\+\)\(\[(?:\+-|-\+)\]\)\(\[(?:\\d\.|\.\\d)\]\+\)\/\s*;?\s*const\s+str2\s*=\s*infixEval\(\s*noHigh\s*,\s*infix\s*\)\s*;?\s*const\s+functionCall\s*=\s*\/\(\[a-z0-9\]\*\)\\\(\(\[0-9\., \]\*\)\\\)\(\?!\.\*\\\(\)\/i\s*;?\s*const\s+toNumberList\s*=\s*(?:\(\s*args\s*\)|args)\s*=>\s*args\.split\(\s*('|"|`),\1\s*\)\.map\(\s*parseFloat\s*\)\s*;?\s*const\s+apply\s*=\s*\(\s*fn\s*,\s*args\s*\)\s*=>\s*spreadsheetFunctions\s*\[\s*fn\.toLowerCase\(\s*\)\s*\]\s*\(/);
You should pass a toNumberList() call to your spreadsheetFunctions[fn.toLowerCase()] call.
assert.match(code, /const\s+applyFunction\s*=\s*(?:\(\s*str\s*\)|str)\s*=>\s*\{\s*const\s+noHigh\s*=\s*highPrecedence\(\s*str\s*\)\s*;?\s*const\s+infix\s*=\s*\/\(\[(?:\\d\.|\.\\d)\]\+\)\(\[(?:\+-|-\+)\]\)\(\[(?:\\d\.|\.\\d)\]\+\)\/\s*;?\s*const\s+str2\s*=\s*infixEval\(\s*noHigh\s*,\s*infix\s*\)\s*;?\s*const\s+functionCall\s*=\s*\/\(\[a-z0-9\]\*\)\\\(\(\[0-9\., \]\*\)\\\)\(\?!\.\*\\\(\)\/i\s*;?\s*const\s+toNumberList\s*=\s*(?:\(\s*args\s*\)|args)\s*=>\s*args\.split\(\s*('|"|`),\1\s*\)\.map\(\s*parseFloat\s*\)\s*;?\s*const\s+apply\s*=\s*\(\s*fn\s*,\s*args\s*\)\s*=>\s*spreadsheetFunctions\s*\[\s*fn\.toLowerCase\(\s*\)\s*\]\s*\(\s*toNumberList\(/);
You should pass args to your toNumberList() call.
assert.match(code, /const\s+applyFunction\s*=\s*(?:\(\s*str\s*\)|str)\s*=>\s*\{\s*const\s+noHigh\s*=\s*highPrecedence\(\s*str\s*\)\s*;?\s*const\s+infix\s*=\s*\/\(\[(?:\\d\.|\.\\d)\]\+\)\(\[(?:\+-|-\+)\]\)\(\[(?:\\d\.|\.\\d)\]\+\)\/\s*;?\s*const\s+str2\s*=\s*infixEval\(\s*noHigh\s*,\s*infix\s*\)\s*;?\s*const\s+functionCall\s*=\s*\/\(\[a-z0-9\]\*\)\\\(\(\[0-9\., \]\*\)\\\)\(\?!\.\*\\\(\)\/i\s*;?\s*const\s+toNumberList\s*=\s*(?:\(\s*args\s*\)|args)\s*=>\s*args\.split\(\s*('|"|`),\1\s*\)\.map\(\s*parseFloat\s*\)\s*;?\s*const\s+apply\s*=\s*\(\s*fn\s*,\s*args\s*\)\s*=>\s*spreadsheetFunctions\s*\[\s*fn\.toLowerCase\(\s*\)\s*\]\s*\(\s*toNumberList\(\s*args\s*\)/);
--seed--
--seed-contents--
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="./styles.css" />
<title>Functional Programming Spreadsheet</title>
</head>
<body>
<div id="container">
<div></div>
</div>
<script src="./script.js"></script>
</body>
</html>
#container {
display: grid;
grid-template-columns: 50px repeat(10, 200px);
grid-template-rows: repeat(11, 30px);
}
.label {
background-color: lightgray;
text-align: center;
vertical-align: middle;
line-height: 30px;
}
const infixToFunction = {
"+": (x, y) => x + y,
"-": (x, y) => x - y,
"*": (x, y) => x * y,
"/": (x, y) => x / y,
}
const infixEval = (str, regex) => str.replace(regex, (_match, arg1, operator, arg2) => infixToFunction[operator](parseFloat(arg1), parseFloat(arg2)));
const highPrecedence = str => {
const regex = /([\d.]+)([*\/])([\d.]+)/;
const str2 = infixEval(str, regex);
return str === str2 ? str : highPrecedence(str2);
}
const isEven = num => num % 2 === 0;
const sum = nums => nums.reduce((acc, el) => acc + el, 0);
const average = nums => sum(nums) / nums.length;
const median = nums => {
const sorted = nums.slice().sort((a, b) => a - b);
const length = sorted.length;
const middle = length / 2 - 1;
return isEven(length)
? average([sorted[middle], sorted[middle + 1]])
: sorted[Math.ceil(middle)];
}
const spreadsheetFunctions = {
sum,
average,
median
}
--fcc-editable-region--
const applyFunction = str => {
const noHigh = highPrecedence(str);
const infix = /([\d.]+)([+-])([\d.]+)/;
const str2 = infixEval(noHigh, infix);
const functionCall = /([a-z0-9]*)\(([0-9., ]*)\)(?!.*\()/i;
const toNumberList = args => args.split(",").map(parseFloat);
const apply = (fn, args) => spreadsheetFunctions[fn.toLowerCase()];
}
--fcc-editable-region--
const range = (start, end) => Array(end - start + 1).fill(start).map((element, index) => element + index);
const charRange = (start, end) => range(start.charCodeAt(0), end.charCodeAt(0)).map(code => String.fromCharCode(code));
const evalFormula = (x, cells) => {
const idToText = id => cells.find(cell => cell.id === id).value;
const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
const rangeFromString = (num1, num2) => range(parseInt(num1), parseInt(num2));
const elemValue = num => character => idToText(character + num);
const addCharacters = character1 => character2 => num => charRange(character1, character2).map(elemValue(num));
const rangeExpanded = x.replace(rangeRegex, (_match, char1, num1, char2, num2) => rangeFromString(num1, num2).map(addCharacters(char1)(char2)));
const cellRegex = /[A-J][1-9][0-9]?/gi;
const cellExpanded = rangeExpanded.replace(cellRegex, match => idToText(match.toUpperCase()));
}
window.onload = () => {
const container = document.getElementById("container");
const createLabel = (name) => {
const label = document.createElement("div");
label.className = "label";
label.textContent = name;
container.appendChild(label);
}
const letters = charRange("A", "J");
letters.forEach(createLabel);
range(1, 99).forEach(number => {
createLabel(number);
letters.forEach(letter => {
const input = document.createElement("input");
input.type = "text";
input.id = letter + number;
input.ariaLabel = letter + number;
input.onchange = update;
container.appendChild(input);
})
})
}
const update = event => {
const element = event.target;
const value = element.value.replace(/\s/g, "");
if (!value.includes(element.id) && value.startsWith('=')) {
}
}